Generally, steel pipe is a cylindrical tube made from steel and is the most utilized product in the steel industry. The primary use of steel pipes is in the transport of products – including oil, gas, and water over long distances. Steel pipes come in a variety of sizes and can also be used for structural requirements. Steel Pipes can be manufactured as Seamless or Welded according to uses and demand.

There are many raw materials for making and production Of pipes, but there are only two most commonly used materials for steel pipes. These are Carbon Steel and Stainless Steel which the uses may vary according to its purpose and applications.

Carbon Steel Pipes

In carbon steel pipes, the star of the show is carbon itself. These pipes boast a higher carbon content, endowing them with a lower melting point, remarkable malleability, durability, and excellent heat distribution capabilities. They are the go-to choice for numerous applications where strength and resilience are paramount.

Stainless Steel Pipes

Stainless steel pipes characteristically has a minimum of 10.5% chormium by weight, means has a larger percentage of chromium in it as compared to carbon steel, which is what grants it the ability to resist corrosion.

Seamless Steel Pipes

Seamless pipes are crafted by drawing a solid billet over a piercing rod, forming the hollow shell without any welding involved in the process. This welding-free approach grants seamless pipes a reputation for exceptional strength and reliability. Historically, they were considered superior in withstanding pressure and were often more readily available compared to their welded counterparts.

Welded Steel Pipes

Welded pipes are manufactured by rolling metal and then welding it longitudinally along its length. As a result, welded pipes feature a visible welded joint in their cross-section. This production method is known for its durability and cost-effectiveness, making welded steel pipes a reliable choice for various applications.

Steel Standard

CARBON STEEL	A/ASTM A106 Gr.B/C API 5L Gr.B SA/ASTM A53-B; SGP; ASTM A333Gr.6/3; APL 5L X42, 52,60,65,70; ASTM A139 (Spiral Pipe); ASTM 795 JIS G3452, JIS G 3454
Austenitic	201, 202, 301, 301L, 302, 303, 304, 304L, 304N, 305, JIS G3459
Ferritic	317L, 321, 347.904L,253Ma, 254SMO. 405, 409, 409L, 410.410S, 410L, 430, 430F, 436, 436L, 439, 443, 444
Martensitic	403, 414, 416, 420J1, 420J2, 431 440A, 440B, 440C, 446
Duplex	15-5PH, 17-4PH/630, 17-7PH, 660A, 660B, 660C, 660D. S31803/2205, 532250, 532750, 532760, $31500, $31500, 32101, 532304